Measuring system for dynamic contact state of wheels and rail of high-speed railway

Abstract

The present invention discloses a measuring system for the dynamic contact state of wheels and rails of a high-speed railway. The measuring system comprises a data acquisition system mounted on a vibration-damping frame, as well as a data processing system and a data display system mounted in an on-board control platform. The data acquisition system comprises encoding structural optical image acquisition units and an inertial measurement device; the vibration-damping frame is connected with the compartment bottom through a fixing device at the top of the vibration-damping frame and suspended between the center suspension and the axle box suspension of the frame of a bogie; the encoding structural optical image acquisition units directly face the left and right wheel-rail contact areas and form a surrounding structure; the data processing system is used for obtaining geometrical parameters of the wheel-rail contact through three-dimensional geometric reconstruction, characterization parameter identification and data interaction according to high-definition images captured by the encoding structural optical image acquisition units and data of the acceleration and the like measured by the inertial measurement device, to obtain a wheel-rail relationship spectrum; and the data display system is used for displaying the images, the data and the wheel-rail relationship spectrum through a human-computer interaction interface in real time. The measuring system for the dynamic contact state of the wheels and the rail of the high-speed railway can achieve real-time capture of the wheel-rail dynamic contact state.

Description

technical field [0001] The invention relates to the technical field of railway transportation. More specifically, it relates to a system for measuring the dynamic contact state of high-speed railway wheels and rails. Background technique [0002] my country is the country with the fastest development, the longest operating mileage, the highest operating speed and the largest scale of high-speed railways in the world. By the end of 2015, my country's railway operating mileage has reached 121,000 kilometers, of which high-speed railway operating mileage is 19,000 kilometers, accounting for more than 60% of the world's total. my country's high-speed rail technology has quickly reached the forefront of the world, achieving a historic leap from "chaser" to "leader", and is leading the development of high-speed rail in the world. [0003] Although my country's high-speed rail construction scale leads the world and the high-speed rail construction technology level is world-class,...

AI Technical Summary

Problems solved by technology

However, due to the high speed of high-speed trains, the state of wheel-rail contact changes rapidly, and there is currently no feasible way to capture its real-time state

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